warranty

DefectPX is a free and open-source software designed to test monitors and screens for dead, stuck, or defective pixels. With multi-monitor support and an intuitive interface, users can test anytime and anywhere, even before purchasing or during the warranty period.

This software tool allows users to easily check their PC, laptop, or tablet screen for dead pixels, scratches, or other defects. The portable version can be used to test screens before buying or during the warranty period, potentially allowing for a replacement. The program is small, free, and open source.

InjuredPixels is a free open-source software that checks for dead pixels on smartphones or tablets, suitable for use both in-store and during the warranty period. No ads, internet connection or permissions required. Manufacturer's policy may entitle the user to a replacement.